CONSIDERATIONS TO KNOW ABOUT HYDROGRAPHIC SURVEY IN DHAKA

Surveyors have to be cautious to be familiar with the situation also to calibrate the echo sounder. Often, it's hard to decide the actual bottom a result of the presence of the column of sentimental mud near the sea bed. A twin frequency echo sounder can help in this case to find out the actual bottom. Once again, large turbidity within the drinkin